The colorbox template is widely used to annotate complex tables in which editors have used color to group like entries. The editor uses the background-color style to color individual cells in the table and then adds a legend consisting of colorboxes at the beginning or end of the table explaining the meanings behind the color scheme. The editor may also add symbols like a caret (^), dagger/obelisk (†), double dagger/diesis (‡), or asterisk (*) to call attention to the different meanings.
Text marker examples
Using a black colorbox with text markers obscures the text as the default style foreground color for most users is black.
The HTML code * must be used to create the asterisk as Wikipedia will treat the typed asterisk as an indented bullet point.